Day 3 Building a Real Claude Code Skill

Today combined the Day 3 theory (skill anatomy, progressive loading) with a full hands-on build: a real, working Claude Code skill for a client project, built from an empty folder to a tested, functioning tool.

What was built: agency-infographic

Brand system (reference.md, sourced from the real platanusdesign-brand skill): PlatanusDesign's actual colors (#F47D20 orange accent, #341390 indigo, etc.), Poppins/Open Sans typography, real logo usage rules, and a "card grid" layout pattern refined through iteration — solid black background, large topic-specific icons in orange, orange card headings, white body text.

Outcome:

A fully working, tested skill: confirmed to research, draft, gate on user confirmation, render on-brand output, and generalize correctly across unrelated topics/industries — built and debugged hands-on rather than handed over per-made.

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Day 3 Building a Real Claude Code Skill